.wrap{
  width: 100%;
  margin: 0 auto;
}
header{
  width: 100%;
  background-color: black;
  box-shadow: 0px 0px 2px;
  opacity: 0.8;
  text-align: center;
  position: fixed;
  top: 0px;
  left: 0px;
  z-index: 10;
}
header img{
  width: 150px;
  padding: 5px;
}
nav{
  padding: 5px;
}
a{
  margin-left: 50px;
  color: grey;
  text-decoration: none;
}
a:hover{
  color: white;
}
.lunbo{
  width: 60%;
  font-size: 0px;
  position: relative;
  top: 0px;
  left: 0px;
  z-index: 5;
  margin: 100px auto;
  text-align: center;
}
.lunbo img{
  width: 100%;
  text-align: center;
  margin: 0 auto;
  width: 100%;
}
.text1{
  width: 100%;
  height: 30px;
  font-size: 15px;
  line-height: 30px;
  color: white;
  background-color: black;
}
/.mask{
  width: 100%;
  height: 80%;
  background-color: black;
  opacity: 0.5;
  position: absolute;
  top: 0px;
  left: 0px;
  z-index: 6;
}*/
.dian span{
  display: inline-block;
  width: 3px;
  height: 3px;
  background-color: grey;
  border: 2px solid grey;
  border-radius: 10px;
  margin-left: 20px;
}
span:hover{
  background-color: white;
}
